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i386: convert hardware exception 16 to an interrupt gate

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Handle coprocessor error exception with interrupt initially off.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Alexander van Heukelum 2008-09-09 21:56:09 +02:00 committed by Ingo Molnar
parent cf81978d5f
commit 252d28fe65
1 changed files with 2 additions and 1 deletions
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3
arch/x86/kernel/traps_32.c
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@ -1088,6 +1088,7 @@ void math_error(void __user *ip)
void do_coprocessor_error(struct pt_regs *regs, long error_code) void do_coprocessor_error(struct pt_regs *regs, long error_code)
{ {
conditional_sti(regs);
ignore_fpu_irq = 1; ignore_fpu_irq = 1;
math_error((void __user *)regs->ip); math_error((void __user *)regs->ip);
} }
@ -1279,7 +1280,7 @@ void __init trap_init(void)
set_intr_gate(13, &general_protection); set_intr_gate(13, &general_protection);
set_intr_gate(14, &page_fault); set_intr_gate(14, &page_fault);
set_intr_gate(15, &spurious_interrupt_bug); set_intr_gate(15, &spurious_interrupt_bug);
set_trap_gate(16, &coprocessor_error); set_intr_gate(16, &coprocessor_error);
set_trap_gate(17, &alignment_check); set_trap_gate(17, &alignment_check);
#ifdef CONFIG_X86_MCE #ifdef CONFIG_X86_MCE
set_trap_gate(18, &machine_check); set_trap_gate(18, &machine_check);